<template>
  <div>
    <div class="search">
      <input type="text" v-model="keyWord" class="search-input" placeholder="输入城市名或拼音"/>
    </div>
    <div class="search-content" ref="search" v-show="keyWord">
      <ul>
        <li
          class="search-item border-bottom"
          v-for="item of list"
          :key="item.id"
          @click="handleCityClick(item.name)"
        >{{item.name}}</li>
        <li class="search-item border-bottom" v-show="hasList">没有找到匹配数据</li>
      </ul>
    </div>
  </div>
</template>

<script>
import BScroll from 'better-scroll'
import {mapMutations} from 'vuex'
export default {
  name: 'CitySearch',
  props: {
    cities: Object
  },
  data: function () {
    return {
      keyWord: '',
      list: [],
      timer: null
    }
  },
  methods: {
    handleCityClick: function (city) {
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  mounted: function () {
    this.scroll = new BScroll(this.$refs.search)
  },
  watch: {
    keyWord: function () {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      if (!this.keyWord) {
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let i in this.cities) {
          this.cities[i].forEach((value) => {
            if (value.spell.indexOf(this.keyWord) > -1 ||
              value.name.indexOf(this.keyWord) > -1) {
              result.push(value)
            }
          })
        }
        this.list = result
      }, 100)
    }
  },
  computed: {
    hasList: function () {
      return !this.list.length
    }
  }
}
</script>

<style lang="stylus" scoped>
  @import '~styles/variable.styl'
  .search
    padding: 0 .1rem
    height:.72rem
    background: $bgColor
    .search-input
      box-sizing:border-box
      padding: 0 .1rem
      height:.62rem
      line-height:.62rem
      width:100%
      text-align:center
      border-radius:.06rem
      color:#666
  .search-content
    z-index:1
    overflow: hidden
    position: absolute
    top:1.58rem
    left:0
    right:0
    bottom:0
    background: #eee
    .search-item
      line-height: .62rem
      padding-left: .2rem
      color: #666
      background: #fff
</style>
